bridge design - zinszer physics
TRANSCRIPT
BY LAURA ZINSZER DHS 2016
ADAPTED FROM WABASH BRIDGE DESIGN BY TODD WILSON, B.S., E.I.T.
TRAFFIC ENGINEER - DMJM HARRIS
Bridge Design
In 1904, the
Wabash Bridge
opened to carry
the Wabash-
Pittsburg Terminal
Railroad over the
Monongahela
River.
In 1948, the
bridge was
removed. The
piers still
remain. What
would it take
to rebuild the
bridge to cross this river?
Definitions
• Girder - a long, narrow, supporting beam
that extends the length of the bridge.
• Abutment - support at beginning or end of
bridge integrated with the ground.
Span - the bridge deck between the two
supporting piers or abutments.
• Pier - intermediate support between the two
abutments under the span of the bridge.
Classification of Form – Deck Truss
Deck Truss has the truss BELOW the
deck of the bridge.
Classification of Form – Pony Truss
Pony Truss has the truss along the side
of the deck of the bridge.
Classification of Form – Through Truss
A Through
Truss has the
truss on the
sides and
above the deck
so the traffic
travels through
the truss on the
bridge.
Parts of a Truss Bridge
Please use
this diagram
to identify the
parts of the
truss bridge
on your
reference
page.